897897859 has 2 divisors, whose sum is σ = 897897860. Its totient is φ = 897897858.

The previous prime is 897897821. The next prime is 897897893. The reversal of 897897859 is 958798798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897897859 - 2⁷ = 897897731 is a prime.

It is not a weakly prime, because it can be changed into another prime (897897899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448948929 + 448948930.

It is an arithmetic number, because the mean of its divisors is an integer number (448948930).

Almost surely, 2^897897859 is an apocalyptic number.

897897859 is a deficient number, since it is larger than the sum of its proper divisors (1).

897897859 is an equidigital number, since it uses as much as digits as its factorization.

897897859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 70.

The square root of 897897859 is about 29964.9438344209. The cubic root of 897897859 is about 964.7370968066.

The spelling of 897897859 in words is "eight hundred ninety-seven million, eight hundred ninety-seven thousand, eight hundred fifty-nine".